package com.hs.aspect;

import cn.hutool.json.JSONUtil;
import com.hs.annotation.OperationLog;
import com.hs.entity.SysLog;
import com.hs.service.SysLogService;
import com.hs.utils.IpAdressUtil;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.time.LocalDateTime;

/**
 * 系统日志：切面处理类，在需要配置日志的方法或者类上注明@OperationLog 信息
 */
@Aspect
@Component
public class SysLogAspect {
    @Autowired
    private SysLogService sysLogService;

    //定义切点 @Pointcut
    //在注解的位置切入代码
    @Pointcut("@annotation(com.hs.annotation.OperationLog)")
    public void logPoinCut() {
    }

    //切面 配置通知
    @AfterReturning("logPoinCut()")
    public void saveSysLog(JoinPoint joinPoint) {
        //保存日志
        SysLog sysLog = new SysLog();

        //从切面织入点处通过反射机制获取织入点处的方法
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        //获取切入点所在的方法
        Method method = signature.getMethod();

        //获取操作
        OperationLog operation = method.getAnnotation(OperationLog.class);
        if (operation != null) {
            String value = operation.value();
            sysLog.setOperation(value);//保存获取的操作
        }

        //获取请求的类名
        String className = joinPoint.getTarget().getClass().getName();

        //获取请求的方法名
        String methodName = method.getName();
        sysLog.setMethod(className + "." + methodName);

        //请求的参数
        Object[] args = joinPoint.getArgs();
        //将参数所在的数组转换成json
        String params = null;
        try {
            params = JSONUtil.toJsonStr(args);
        } catch (Exception e) {
            e.printStackTrace();
        }
        sysLog.setParams(params);

        //请求的时间
        sysLog.setOperationDate(LocalDateTime.now());

//        //获取用户id (根据当前安全框架来获取登录用户信息)
//        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
//        if (!(authentication instanceof AnonymousAuthenticationToken)) {
//            sysLog.setUserId(authentication.gt);
//        }

        //获取用户ip地址
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes())
                .getRequest();
        sysLog.setIp(IpAdressUtil.getIpAdrress(request));

        //调用service保存SysLog实体类到数据库
        sysLogService.save(sysLog);
    }
}
